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<A NAME=CREF>

<TITLE>CREF</TITLE></A>
<b><a href=r37_idx.html>INDEX</a></b><p><p>



<B>CREF</B> _ _ _  _ _ _  _ _ _  _ _ _ <B>switch</B><P>
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The switch <em>cref</em> invokes the CREF cross-reference program that 
processes a set of procedure definitions to produce a summary of their 
entry points, undefined procedures, non-local variables and so on. The 
program will also check that procedures are called with a consistent 
number of arguments, and print a diagnostic message otherwise. 
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The output is alphabetized on the first seven characters of each function 
name. 
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To invoke the cross-reference program, <em>cref</em> is first turned on. 
This causes the program to load and the cross-referencing process to 
begin. After all the required definitions are loaded, turning <em>cref</em> 
off will cause a cross-reference listing to be produced. 
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Algebraic procedures in REDUCE are treated as if they were symbolic, so 
that algebraic constructs will actually appear as calls to symbolic 
functions, such as <em>aeval</em>. 
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